Toothbrush



FIG. 1 is a front perspective view of the article;

FIG. 2 is a side view of the article;

FIG. 3 is a rear view of the article;

FIG. 4 is a plan view from above of the article; and,

FIG. 5 is an plan view from below of the article. 

The ornamental design for the toothbrush, as shown and described. 